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(N9 Model.) 2 Sheets--Sheet 1.

, 152W. COLE.

NON-INTERFERENCE SIGNAL BOX.

No. 445,799. Pate'nted Feb. 3, 1891.

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(No Model.) 2 Sheets-Sheet 2.

- F. W. COLE.

NON-INTERFERENCE SIGNAL BOX. Nu l/15,799. Patented Feb. 3, 1891.

M wwg UNITED STATES PATENT OFFICE.

FREDERICK \V. COLE, OF N EWVTON, MASSACHUSETTS, SSIGNOR OF ONE- HALF TOMOSES G. CRANE, OF SAME PL OE.

NON-INTERFERENCE SIGNAL-BOX.

SPECIFICATION forming part of Letters Patent No. 445,799, dated ebruary3, 1891.

Application filed May 29, 1890.

T ctZZ 1072,0122, it may concern:

Be it known that I, FREDERICK W. COLE, of Newton, county of Middlesex,State of Massachusetts, have invented an Improvement in Non-InterferenceSignal-Boxes, of which the following description, in connection with theaccompanying drawings, is a specification, like letters and figures onthe drawings representing like parts.

This invention has for its object to consaidmagnet-as, for instance,decreasing its attractive power when the box-door is open.Thisinventionis herein represented as apphed to a normally-wound-uptrain. The

V locking-lever for the train is normally held ther moved to release thetrain.

in itslocking position by means of a spring, and the pull is madeindependent of the locking-lever and adapted to raise it against thetension of said spring, or to move it into suitable position to enableit to be again or fur- A box-controller is'p'rovided which is designedto cooperate with the said locking-lever to control theeifectivetransmission of the signal, said box-controller being governed by thearmat'ure of said non-interference magnet.

Figure 1 shows in front elevation a signalbon embodying this invention;Fig. 2, ahori- Zontal section of, the box shown in Fig. 1, taken on thedotted line was; Fig. 3, a detail of the means shown in Fig. 1 forvarying the power of the non-interference magnet; Fig. 4, a rear endview of the switch controlled by the box-door for varying the power ofthe non interference magnet; Fig. 5, a front view of the box, showingthe door open; Figs. 6, 7, 8, 9, and 10, details of some of the partsshown in Fig. 1 to be referred to; Fig. 11, a detail of a modificationto be referred to 5 Fig. 12, a detail of another modification to bereferred to; Figs. 13 and 14, detalils of another modification to bereferred td.

Referring to Figs. 1 to\10, the main framework a supports asignaling-train of any usual or suitable construction, it being hereinrep resented as a normally-wound-up train comprising a drive-wheel a,engaging a pinion a? on a shaft (1 which carri s atoothed wheel a, whichengages a pinion 5 on a shaft 0., which carries a toothed wheel 1,engaging a pinion a on a shaft a carryin the escapewheel 0. whichco-operates with a allet a.

The signal-wheel b is herein repre ented as placed on the shaft 0..

Two pens 2' 3 are herein represented as hearing on the signal-wheel b,to which the line-wires lead.

The controlling-lever for the box is herein represented as alocking-lever c, secured to a rod or shaft 0, having a pivotal hearingat one end in the front plate and having a loose bearing in an elongatedopeningin the rear plate. (See Figs. 8 and 9.) A spring 0 is providedfor holding the locking-lever c in its locking position.

The locking-lever c has on its front and lower side a projection 0having an inclined face, and a projection c is secured to the rear sideof the toothed wheel a which co-operates with the projection 0 acting tohold the said locking-lever in its locking position in connection withthe spring 0 The outer end of the locking-lever c has on it a projection0 which when in looking position engages a 'pin 0 on the escape-wheel aThe pull, which is herein shown as made independent of the locking-leverand repre sented at d, is pivoted to the frame-work at d, the rear endof which passes beneath the locking-lever 0, so that by depressing saidpull cl the locking-levercis raised against the tension of the spring 0WVhen the pull (Z is depressed, the locking-lever c is lifted, so thatthe projection 0 passes above the upper surface of the projection 0 asrepresented by swerve it toward the wheel a as represented IOC by dottedline, Fig. 8, the locking-lever moving in its elongated bearin g,especially shown in Figs. 8 and 9. The pin 0 is made quite short, sothat when the lever is thus swung in a horizontal plane the projectionwill pass by the end of said pin c and release the train, as representedin dotted lines, Fig. 8. The locking-lever 0 thus operated, the trainwill run and the lever c occupy a position against or adjacent to therear face of the wheel a, with the projection 0 in the path of movementof the projection 0 and as soon as the wheel a makes a completerevolution the projection a will strike against the inclined face of theprojection c and move the lever 0 back in a horizontal plane, o that theprojection 0 will catch the pin 0 when the escape-wheel completes itsrotation.

The non-interference magnet n is herein represented as included in thesignal-circuit, its armature n being secured to or carried by anarmature-carrying lever 11?, pivoted at n and having attached to it aretractile spring W. This armature-carrying lever constitutes thebox-controller. The lower end of the box-controller n is beveled, as atn, at one end, (see Fig. 10,) and said armature'carrying lever 01terminates adjacent to the end of the locking-lever c. \Vhen thelocking-lever c is in its locking position and the magnet ndemagnetized, the box-controller n will be moved toward the end of thelocking-lever c, as represented by dotted and full lines, Fig. 7, sothat the said end of the locking-lever will occupy a position contiguousto the beveled portion of the said box-controller. If the locking-levercis raised when the box-controller n is in this position, the said leverwill strike the beveled side n of said box-controller n and will bemoved by it, a very short distance toward the escape-wheel a theelongated bearing for the shaft 0 permitting such movement. Thisbox-controller when in this position effectually prevents movement ofthe lockinglever ctoward the wheel a", and hence prevents the release ofthe train. lVhen the pull is released, the locking-lever 0 will resumeits normal position. This slight movement toward the wheel a is givenfor the purpose of compensating for any lost motion that there may bebetween the parts, the effect of which will be apparent in theco-operation of the projections c c.

As herein shown, (see Fig. 3,) the non-interference magnet has two coilsa or, one of which is included in the signaling-circuit and the other ina branch wire 4., and a switch is provided for closing said branch wire4, the members of which 5 6 are suitably supported an" a block, and oneof which members is moved into engagement with the other by a plug 0,controlled by the box-door. Another switch is provided, represented bythe mem- 6 5 bers 5 and 7, which are also controlled by the said plug 0,the member 7 of said switch being connected with a branch wire 8, whichis joined to the line-circuit between the coils n 71 of thenon-interference magnet. When the box-door is closedthe circuit passesfrom the line through the pen 2, signal-wheel b, pen 3, wire 9, coil n,coil n, wire 4, switch 6 7, which will at that time be closed, and tothe line. IVhen the box-door is open, the current will pass over the pen2, signal-wheel b, pen 3, wire 9, coil n, branch wire 8, switch 7 5 tothe line, thus passing by and shunting the coil n. Then the door is thusopen, the power of the noninterference magnet is reduced aboutone-thirdv in view of the fact of the coil a being cut out; but there ispresumed to be attractive force enough by the coil 7?. to hold thearmature n against its poles; but if said armature is once retractedthere is not sufficient power to draw it up again. Thus it will be seenthat the power of the non-interference magnet is controlled by a switch,which isin turn controlled by the box-door. This is for the purpose ofpreventing the armature responding to the successive impulses fromanother box when the home-box door is open. Various ways may be devisedof accomplishing this same endviz., to decrease the power of thenon-interference magnet when the boxdoor is open-and I will now proceedto describe several modifications, although I do not desire to limit myinvention to the specific arrangements shown for accomplishing thisresult.

Referring to Fig. 11, the coils n n" are con.- nected in circuitsubstantially the same as in Fig. 3. The coil or, instead of beingincluded in a branch wire, is connected to a shunt-circuit closer- 1213, which, when the door is open, is closed and shunts out the coil n.In this figure I have also represented the armature as carrying theinterposed block which is described in United States Patent No. 323,218,dated January 6, 1880.

Referring to Fig. 12, the coils of the noninterference magnets are bothincluded in the signaling-circuit, and a resistance-coil p is connectedin a branch wire with a circuitcloser p, and when the door is open thesaid circuit-closer p is closed, so that the current will divide, partgoing through the non-inter ference magnet and part through theresistance-coil, thereby reducing the strength of the magnet. In this.figure the armature is arranged to co-operate with a locking-lever,substantially as shown in United States Patent No. 165,918, dated July27, 1875.

In Figs. 13 and lat the coils an of the noninterference magnet areincluded in the sig naling-circuit, and an auxiliary armature tispivoted at t, which is adapted to' co-operate with the sides of thecores of the coils. Said armature is moved positively by the plug 0 onthe door, so that when the door is open the armature will be drawnagainst the cores by means of the spring 16 and will thereby absorb aportion of the magnetism and reduce its pull onthe armature a.

IIO

As above stated, I have described in coni v nection with Figs. 11 and 12other forms of controlling devices for signal-boxes. So I do not desireto limit my invention as regards the variation of the power of thenon-interference magnet to any particular form of a signal-box.

I claim- 1. In a signal-box, the combination, substantially asdescribed, of a signaling-train, a non-interference magnet, itsarmature, a box-controller governed thereby, and means controlled by thebox-door for slightly decreasing the power of said non-interferencemagnet when said door is open, that it may hold but not attract itsarmature, substantially as described.

2. In a signal-box, a signalingtrain a noninterference magnet. itsarmature, and a box controller governed by the said armature, and aswitch connected electrically with one of the coils of saidnon-interference magnet, which is adapted todisable or renderinoperative said coil, substantially as described.

3. In a signal-box, a signaling-train, a noninterference magnet, itsarmature and boxcontroller governed by the said armature, and a switchconnected electrically with one of the coils of said non-interferencemagnet, which is adapted to disable or render inoperative said coil,said switch being controlled by the box-door, substantially asdescribed,

4. In a signal-box, a signaling-train, a noninterferenoe magnetcomprising two coils n at, its armature and armature-carrying lever, andtwo switches controlled by the box-door, one for including one of thecoils in the signaling circuit and the other for including both coils inthe signaling-circuit, substantially as described.

5. In a signal-box, a signaling-train, alocking-lever therefor, andmeans for moving it against the tension of its holding-spring, combinedwith a projection c on said lockinglever, and a projection c on one ofthe wheels of the train, and a projection c on said locking-lever, andpin on one of the wheels of the train engaged by said stantially asdescribed.

6. In a signal-box, a non-interference magnet, its armature, and asignaling-train, a vertically and horizontally movable locking-levertherefor, combined with projections carried by moving parts of thetrain, with which said locking-lever cooperates, substantially asdescribed.

'7. In a signal-box, a signaling-train, a locking-lever, means forholding it in its locking position, and two actuators for saidlockinglever, one for placing it in condition to operate and the otherto move it to release the train, combined with a box-controller,noninterference magnet, and its armature, substantially as described.

8. In a signal-box, a signaling-train, a locking-lever for it, and anon-interference magnet and its armature, combined with a projection onone of the wheels of the train for holding the locking-lever in itslocking position when at rest, and a box-controller governed by thearmature of said non-interference magnet for also holding thelocking-lever in its locking position when disengaged from saidprojection and when the armature is retracted, sub stantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERICK W. COLE.

Witnesses:

BERNICE J. N OYES, EMMA J. BENNETT.

projection, sub-

